Re: [PATCH] pinctrl: berlin: fix return value for dev_get_regmap

From: Sebastian Hesselbarth
Date: Mon Jun 30 2014 - 05:34:38 EST


On 06/29/2014 09:18 AM, Himangi Saraogi wrote:
The failure value of dev_get_regmap is NULL. Hence, the return value is
changed to -ENODEV.

A simplified version of the semantic match that finds this problem is as
follows:

// <smpl>
@@
expression e1;
@@

* if (!e1)
return PTR_ERR(e1);

// </smpl>

Signed-off-by: Himangi Saraogi <himangi774@xxxxxxxxx>
Acked-by: Julia Lawall <julia.lawall@xxxxxxx>

Himangi,

thanks for the fix, but we already have a similar patch [1] pending.

Sebastian

[1] http://www.spinics.net/lists/linux-kernel-janitors/msg19125.html

---
drivers/pinctrl/berlin/berlin.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/berlin/berlin.c b/drivers/pinctrl/berlin/berlin.c
index edf5d2f..86db223 100644
--- a/drivers/pinctrl/berlin/berlin.c
+++ b/drivers/pinctrl/berlin/berlin.c
@@ -320,7 +320,7 @@ int berlin_pinctrl_probe(struct platform_device *pdev,

regmap = dev_get_regmap(&pdev->dev, NULL);
if (!regmap)
- return PTR_ERR(regmap);
+ return -ENODEV;

pctrl = devm_kzalloc(dev, sizeof(*pctrl), GFP_KERNEL);
if (!pctrl)


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